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Finding the Fourth Proportional to 180,561.73, 249,172.11 and 99,987.52

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Solution

The fourth proportional to 180,561.73, 249,172.11 and 99,987.52 is: 137,981.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,561.73 : 249,172.11 = 99,987.52 : x
  2. Step 2: Convert to fraction form
    180,561.73/249,172.11 = 99,987.52/x
  3. Step 3: Cross multiply
    180,561.73x = 249,172.11 × 99,987.52
  4. Step 4: Simplify right side
    180,561.73x = 24,914,101,332.07
  5. Step 5: Solve for x
    x = 24,914,101,332.07/180,561.73
  6. Step 6: Final answer
    x = 137,981.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.